Clutch-operating mechanism



me 7 J. F. WRIGHT .cwrcn ornwms uncmmrsu l Filed Dec.v 9.. 1922 2Sheets- Sheet 2 |v||\|| A /J v n En@ MUU WQ @N N N n .l .lill

A m HHM, MIM

gverzr! MXN Patented June 7, 1927.v

Unire sr-A'rss 1,631,392 PATENFE FCF` i JAMEsF. WRIGHT, OF CLEVELAND,OHIO, Assrenon To THE MCMYLER iNTnRs'TATE COMPANY, or BnDFoRnoHIo, ACORPORATION or OHIO.

CLUTCH-OPERATING MECHANISM.

Application filed. December 9, 1922. Serial No. 605,830.

This invention relates to mechanism forV selectively Operating aplurality of clutches upon the same shaft, as shown herein, the devicebeingapplied to the friction clutches controlling the hoist and holddrums of a crane. j f Y An object of the invention is to provide aclutch operating mechanism in whichV the clutch shifting'members aremounted within the shaft and the operating members for the clutches arelocated at an end of the shaft convenient to the operator..

A further object is to lenable 'the drums of the hoist to be controlledby cone clutches instead of' by one cone clutch and an outside bandclutch as has heretofore been the practice.` Y

Other objects will be apparent from the following description andvaccompanying drawings.

The following description land accompanying drawings set forth in detailcertain means embodyingl my invention, the disclosed means, however,constituting but one of the various mechanical forms in' which theprinciple of the invention may be employed. I p

Reference should be had to the accompanying drawings forming a part ofthis specification in which Fig. 1 is a longitudinal section through thehoist drums, clutches and clutch operating screws; `Fig. 2 is anenlarged longitudinal section through the clutch shifting screws attheend of the shaft.

Referring to the accompanying drawings,

the drum shaft 1 is hollow and has reducedv ends journaled in fixedsupports` 2 and 3,` vthe shaft having shoulders at the inner sides,

of the fixedl supports by means of which the shaft is held againstlongitudinal movement. Adjacent the fixed support 8, a gear 4 is fixedto the shaft 1 and has proj ecting from its inner face a flange 5, theouter vsurface of which is conical. To theinner side of the fixed gear4, a drum 6 having inner and outer peripheral fianges 7 andS is looselymounted on Vthe shaft. The peripheral flange 8 of the drum 6 has anoutturned clutch' portion 9 which has aconical inner face adapted toengage the Outer surface of the clutch fiange 5 on the gear 4.- A coilspring 10 is interposed between the gear 4 and the drumy 6 and serves tonormally hold the drum 6 away from the gear 4 So that the clutch members5 and 9 are out'of engagement. Just within the opposite fixed sup*- port2 a clutch member 1l having a periph# eral rim 12 with a conical outerface is slidably keyed to the shaft 1. To the inner side of the clutchmember 11 is a drum 13 which is loose upon the shaft and has` an innerlflange 14, thev outer portion ,15 of which is turned outwardly tooverlie ythe flange 7 of the drum `6.v The drum 13 has an outer flange16, the Outer portion 17 of whichA extends outwardly and hasa conicalinnersurf face adapted to be engaged bythe Vrim portion 12 of the clutchmember 11.` The drum 13 is mounted upon ai reducedportion' 18 of andslidable clutch member 11 and serves to normally hold the clutch member`11 out of engagement with the drum. The shaft 1' projects at one endpast the fixed support 2 and supports a two part bracket 22 whichisclamped over and turns upon a bronze bushing 23 which fits within agroove 24 at the end of the shaft and is pinned to the shaft. Thebracket 22 hasa laterally extending arm 25vwhich is engaged by a pin 26carried by the fixed support 2, to hold the bracket against rotation. f

VV/ithin the hollow shaft l and having slidable t therein is a hollowpush pin 27, the outer end of which projects slightly beyond the endoftheshaft` 1 towhich the bracket 22 is attached. rSlidablyfittingwithin the hol low push pin 27 ,is a solid push pin 2S the outer end ofwhich yprojects beyond the outer end Of the push pin 27. l f

Fixed tothe inner end of the hollow push pin 27 -is a key 29 whichvextends through slots in the shaft 1 engaging outside the shaft. againstthe hub of clutch member 11.

Fixed to .the inner end ofthe push'pin 28 is `a key 30 whichextendsthrough slots in the shaft 1 andengages a washer 31 at the innerendv of the hub of the drum 6. The bracket 22hasa portion 32 extendingbe-V yond the end of the shaft 1, the portion 32 of the bracket havingan internally threaded opening in axial alignment with `the 'sha-ft. Ahollow screw 33 which is kboredraxially to receive the push pin`28 isfitted Y in the. threaded opening of the bracket and has a bronzebearingvtipy 34 atits inner end en-`.

llU.

Cil

force the push pin 27 `inwardly or to frelease the push pin 27 andpermit it to be moved outwardly by the coil spring'QO." Aspider '36 isrigidly secured to the end-32 of the bracket and has an outer endportion with an internally 'threaded opening therethrough which is alsoinvaxial align-ment with the shaft. The end 'portion 37 ofthev spider isbeyond thef head .35 of the screw 33and vis spaced sufficiently Vfromtheend32A of the bracket to permit the necessary movements of the screw fTherhead B5 ofthe screw 'has-two counter-bores 38 and; 39, theinnerofwhich, 38, receiving an oilreservoir 40 fixed to the bronzetipeQ.,I and the outer counter-bore. 39 beingof .larger diameter toreceive the inner end ofthe'screw il vfor=operating-,the push pin 28'.'The screw 4l is providedwith a bronze tip l2 which engagesthe endof thepush pin 28 and an enlarged head 43 adapted tobe engaged by a suitableturning tool. {VJhen the screw 4l is turned in a direction'to force thepush pin 28' inwardly, thedrum 6 is shifted intoclutching engagementwiththel gear 4in opposition tov the coil spring. l0.A When thescrew4lis turned in the-opposite direction, the screwis moved away from theendof the push pin 28,l permitting the coil spring l() to slide the:drum 6 away from the gear 4, 'disengaging the clutch members' Thelscrews 33 and All are operable independently so that eitheror both offthe' drums may be clutched" to the shaft.l l

Having described my invention, I-claim:

l. In` a clutch controlled mechanism the'l combination withahollowrotatable shaft,v

of clutch membersslidable onthe shaft, a

hollow push 'pin 'with'm theshaft "for shifting onefof the clutchmembers, a' push pin' within the'hollow push pin for shifting anotherclutch' member,"and means-at one endl of the shaft for operating saidpush pins.'

2. In a clutch controlled'mechahisnn the combination'with a hollowrotatable shaft, of clutch 'members slid-able upon-thel shaft, a hollowpush pin slidably mounted within theJ shaft, said push' pin-having akeyprojecting through a slot inV the"shaftandengagingja clutch member,aV second push pin slidably. mounted within thehollow push pin and"having la `key-projecting through a slot inl the shaft andengaginganoth'er clutch member, and means at one end of s'aid'shaft forshifting said push pms.

3. In a clutch -controlled mechanism, aA

hollow rotatable. shaft, a hollow longitudinal-ly movable push pinwithin the hollow shaft, said push pin having'a'key extending.'` througha slot' in said shaft, a second longitudinally movable push pin withinsaidhollow push pinand havinga keyf projecting through a slot intheshaft', clutch 'members slidable upon said shaft, springs fo-r normallyfholdingsaid slidableI clutchmembers in'finoperative 'positionl andinengagement with said keys, and means at one end of the shaftlforselectively operating said push pins to shift the clutchV members inopposition to said springs.

4. In aclutch controlled mechanism,ythe combination with a hollowrotatable/shaft having a plurality of shiftable clutchv memberslthereon, of means for'selectively operating said clutch memberscomprising a hollow push pin, a push Ypin within the hollow push pin,said push .pins having parts engaging-saldclutchmembers, a nonrotatablecombination .with a hollow` rotatable. shaft havingiapluralityofshiftable clutch members thereon, of means for selectively operatingsaid yclutchl members comprisingfa .hollow push pin within the shaft anda second push pinv within .said hollow push pin, said push pinshavinglparts at their inner ends engaging the'clutch members, theouter'ends of the push pinsl projecting bey-ond'an end of the shaft,anon-rotatable bracket supported on said end of the shaft, said brackethaving a part at the endy of the shaft provided with la, threadedopening in axial alignment with the shaft, a hollow Ascrew in saidthreaded opening surrounding the inner push pin and engagingfthe hollowpush pin, an extension carried by the bracket, said eX- tension havingathreaded opening; in axial.

alignment withV the inner push pin,` and a screw in said lastmentionedopening engaging=the end of said inner push pin.'

G. The combinationwitha sha'fhof'apair of'inner members loose on theshaft,`outer clutch members keyed to the shaft, one of said outer clutchmembers being slidable on` the shaft into engagement with'one ofsaidv.innerV clutch members,- the other inner clutch member beingslidable-'upon' the shaft into engagement with' the other `outer clutchmember, springsK interposed between said fixed-andmovable clutch membersfor normally holding them out' of engagement, al

hollowpush pin havinga part engagingone ofsaid slidable clutch' members,a pushpin` In testimony whereof, I hereunto aflik Imy.

signature.

vJAMES F. WRIGHT."

